Can't keep up i moved wrongly vanilla

[kamil z]

Na serwerze Vanilla Forge 1.10.2 z 6 modami występuje taki błąd jak niżej, gdy zaczynam latać na creative i spectator to mnie cofa pomimo 

allow-flight=true

i 

max-tick-time=-1
network-compression-threshold=-1

[18:33:47] [Server thread/WARN] [net.minecraft.server.MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 5197ms behind, skipping 103 tick(s)
[18:34:03] [Server thread/WARN] [net.minecraft.server.MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 2215ms behind, skipping 44 tick(s)
[18:34:27] [Server thread/WARN] [net.minecraft.server.MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 2092ms behind, skipping 41 tick(s)
[18:34:42] [Server thread/WARN] [net.minecraft.server.MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 2091ms behind, skipping 41 tick(s)
[18:34:57] [Server thread/WARN] [net.minecraft.network.NetHandlerPlayServer]: <nazwagracza> moved too quickly! -2.32564029910154,0.0,-10.19379180112334
[18:34:59] [Server thread/WARN] [net.minecraft.network.NetHandlerPlayServer]: <nazwagracza> moved too quickly! -2.165087123350739,0.0,-9.808593051866339
[18:35:02] [Server thread/WARN] [net.minecraft.server.MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 5830ms behind, skipping 116 tick(s)
[18:35:12] [Server thread/WARN] [net.minecraft.network.NetHandlerPlayServer]: <nazwagracza> moved too quickly! -10.102321017459255,0.0,-1.110991131511824
[18:35:25] [Server thread/WARN] [net.minecraft.server.MinecraftServer]: Can't keep up! Did the system time change, or is the server overloaded? Running 2089ms behind, skipping 41 tick(s)

Tak wygląda server.properties

#Minecraft server properties
#Tue Apr 18 18:19:01 CEST 2017
max-tick-time=-1
generator-settings=
force-gamemode=false
allow-nether=true
gamemode=0
broadcast-console-to-ops=true
enable-query=false
player-idle-timeout=0
difficulty=1
spawn-monsters=true
op-permission-level=4
announce-player-achievements=true
pvp=true
snooper-enabled=false
level-type=DEFAULT
hardcore=false
enable-command-block=true
max-players=5
network-compression-threshold=0
resource-pack-sha1=
max-world-size=29999984
server-port=25565
server-ip=
spawn-npcs=true
allow-flight=true
level-name=world
view-distance=10
resource-pack=
spawn-animals=true
white-list=false
generate-structures=true
online-mode=false
max-build-height=256
level-seed=
enable-rcon=false
motd=

Na serwerze jest 1GB ramu, ogólnie posiadam 8GB i procesor AMD Phenom 1055T 6X 2.8GHZ~~3.2GHZ.
Komenda 

/gamerule disableElytraMovementCheck true

 nie działa. Sprawdzałem wszystkie rozwiązania i ku^wa nie działa 

 

[Wielki Posejdon]

Przydziel więcej RAM na serwer, po prostu nie wyrabia. Jeżeli to localhost, to wykup jakąś tanią ofertę ~4gb RAM powinno wystarczyć

[Blancik.]

Bardzo uboga ilość pamięci RAM jak na serwer z modami.